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BR9205965A - Process for the control of sodium oxalate concentration in sodium aluminate solutions - Google Patents

Process for the control of sodium oxalate concentration in sodium aluminate solutions

Info

Publication number
BR9205965A
BR9205965A BR9205965A BR9205965A BR9205965A BR 9205965 A BR9205965 A BR 9205965A BR 9205965 A BR9205965 A BR 9205965A BR 9205965 A BR9205965 A BR 9205965A BR 9205965 A BR9205965 A BR 9205965A
Authority
BR
Brazil
Prior art keywords
sodium
control
aluminate solutions
oxalate concentration
sodium aluminate
Prior art date
Application number
BR9205965A
Other languages
Portuguese (pt)
Inventor
Jean Victor Sang
Bryan A Hiscox
Robert Clegg
Jacques Laurier
Original Assignee
Alcan Int Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcan Int Ltd filed Critical Alcan Int Ltd
Publication of BR9205965A publication Critical patent/BR9205965A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
    • C01F7/47—Purification of aluminium oxide, aluminium hydroxide or aluminates of aluminates, e.g. removal of compounds of Si, Fe, Ga or of organic compounds from Bayer process liquors
    • C01F7/473—Removal of organic compounds, e.g. sodium oxalate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
BR9205965A 1991-05-03 1992-05-01 Process for the control of sodium oxalate concentration in sodium aluminate solutions BR9205965A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US69525691A 1991-05-03 1991-05-03
PCT/CA1992/000188 WO1992019537A1 (en) 1991-05-03 1992-05-01 Method for the control of sodium oxalate levels in sodium aluminate solutions

Publications (1)

Publication Number Publication Date
BR9205965A true BR9205965A (en) 1995-03-01

Family

ID=24792272

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9205965A BR9205965A (en) 1991-05-03 1992-05-01 Process for the control of sodium oxalate concentration in sodium aluminate solutions

Country Status (5)

Country Link
AU (1) AU650747B2 (en)
BR (1) BR9205965A (en)
CA (1) CA2108785C (en)
IE (1) IE68425B1 (en)
WO (1) WO1992019537A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0662451B1 (en) * 1994-01-07 1999-07-28 Alcan International Limited A process for crystallising out impurities from Bayer process liquors
FR2794449B1 (en) * 1999-06-04 2001-10-19 Pechiney Aluminium METHOD FOR PURIFYING SODIUM ALUMINATE LIQUORS CONTAINING SODIUM OXALATE FOR USE OF RESIDUES
CN112047366A (en) * 2020-08-11 2020-12-08 中国铝业股份有限公司 Method for removing sodium oxalate in alumina decomposition mother liquor by using scabs of decomposition tank
CN112939040A (en) * 2021-03-31 2021-06-11 中铝集团山西交口兴华科技股份有限公司 Method for removing sodium oxalate in production process of alumina and fine alumina
CN114408956B (en) * 2022-01-07 2023-08-22 中铝山东有限公司 Comprehensive carbon removal method and system for high-organic matter sodium aluminate solution
CN116282102B (en) * 2022-11-29 2024-11-08 山西华兴铝业有限公司 Method for adding seeds in organic matter removal process

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2317226A1 (en) * 1975-07-07 1977-02-04 Alcan Res & Dev IMPROVEMENTS IN ALUMINA PRODUCTION
JPS5456098A (en) * 1977-10-12 1979-05-04 Nippon Light Metal Co Method of producing crude aluminum hydrate particles
US4263261A (en) * 1978-12-21 1981-04-21 Sumitomo Aluminium Smelting Company, Limited Method for the removal of impurities from sodium aluminate solution
GB2211832A (en) * 1987-10-30 1989-07-12 Commw Scient Ind Res Org Bayer process liquor purification
AU613758B2 (en) * 1988-06-03 1991-08-08 Vereinigte Aluminium-Werke Aktiengesellschaft Method for removing sodium oxalate from caustic aluminate liquors

Also Published As

Publication number Publication date
IE921423A1 (en) 1992-11-04
AU650747B2 (en) 1994-06-30
AU1664292A (en) 1992-12-21
WO1992019537A1 (en) 1992-11-12
IE68425B1 (en) 1996-06-12
CA2108785A1 (en) 1992-11-04
CA2108785C (en) 1998-06-16

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Legal Events

Date Code Title Description
EE Request for examination
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 01/05/2012